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In In-situ radioactivity measurement techniques, efficiency calibration models use predefined models to simulate a sample’s geometry and radioactivity distribution. However, simplified efficiency calibration models lead to uncertainties in the efficiency curves, which in turn affect the radioactivity concentration results. This study aims to develop an efficiency calibration optimization methodology to improve the accuracy of in-situ gamma radiation measurements for byproducts from industrial facilities. To accomplish the objective, a drive mechanism for rotational measurement of an byproduct simulator and a sample was constructed. Using ISOCS, an efficiency calibration model of the designed object was generated. Then, the sensitivity analysis of the efficiency calibration model was performed, and the efficiency curve of the efficiency calibration model was optimized using the sensitivity analysis results. Finally, the radiation concentration of the simulated subject was estimated, compared, and evaluated with the designed certification value. For the sensitivity assessment of the influencing factors of the efficiency calibration model, the ISOCS Uncertainty Estimator was used for the horizontal and vertical size and density of the measured object. The standard deviation of the measurement efficiency as a function of the longitudinal size and density of the efficiency calibration model decreased with increasing energy region. When using the optimized efficiency calibration model, the measurement efficiency using IUE was improved compared to the measurement efficiency using ISOCS at the energy of 228Ac (911 keV) for the nuclide under analysis. Using the ISOCS efficiency calibration method, the difference between the measured radiation concentration and the design value for each simulated subject measurement direction was 4.1% (1% to 10%) on average. The difference between the estimated radioactivity concentration and the design value was 3.6% (1~8%) on average when using the ISOCS IUE efficiency calibration method, which was closer to the design value than the efficiency calibration method using ISOCS. In other words, the estimated radioactivity concentration using the optimized efficiency curve was similar to the designed radioactivity concentration. The results of this study can be utilized as the main basis for the development of regulatory technologies for the treatment and disposal of waste generated during the operation,maintenance, and facility replacement of domestic byproduct generation facilities.

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초저온 방사성의약품 운송시스템 개발 = Development of cryogenic radiopharmaceutical transport system 조은하, 이유황 p. 321-326

관절염 유발 동물 모델에서 이소에고마케톤 함유 패치의 관절염 치료 효과 = The therapeutic effect of medical patches including isoegomaketone on the collagen antibody-induced arthritis in mice 진창현, 김예람, 한아름 p. 327-332

굴착 손상 영역 및 근계 영역에서의 모암 및 벤토나이트의 열-수리적 거동 특성에 대한 수치해석적 연구 = Long-term changes in excavation damaged zone(EDZ) and near-field due to thermal-hydraulic processes in host rock and bentonite 조성길, 권용민, 김현재, 서진원, 김교순, 구준모 p. 333-344

핵물질 연대측정을 위한 불확도 추정 알고리즘 연구 = Uncertainty calculation algorithm for the estimation of the radiochronometry of nuclear material 박재찬, 전태훈, 송정호, 주민수, 정진영, 권기남, 최우철, 정재학 p. 345-357

방사성폐기물 표층처분시설 통합 모니터링 시스템 개발 = Development of an integrated monitoring system for the low and intermediate level radioactive waste near-surface disposal facility 최세호, 강현구, 권미진, 하재철 p. 359-367

전자선 조사에 의해 제조된 라돈 차폐용 ethylene vinyl acetate/silicone 에멀젼의 물리적 특성 평가 = Evaluation of physical properties of ethylene vinyl acetate/silicone emulsion for radon shielding prepared by electron-beam irradiation 박종석, 이장건, 정성인, 전준표, 임윤묵, 최재학, 김갑수 p. 369-375

고정형(Stationary-gantry) 희소뷰(Sparse-view) CT 보안검색시스템의 공간분해능 평가 = The evaluation of spatial resolution of stationary-gantry sparse-view CT security-screening system 김영조, 최광윤, 정춘호, 박형규 p. 377-384

골반통 환자의 질환 검사 = Disease testing in pelvic pain patients : comparison between ultrasound and computed tomography imaging : 초음파와 컴퓨터단층촬영 간의 비교 구은회 p. 385-390

PET-MRI에 대한 최적의 정보 제공에 대한 연구 = A study on the optimal information provision for PET-MRI : focused on literature article : 문헌 보고 중심으로 손동섭, 구은회 p. 391-396

뇌 자기공명영상에서 Heavily T2 FLAIR와 DWI 기법의 영상비교 = Image comparison of heavily T2 FLAIR and DWI method in brain magnetic resonance image 구은회 p. 397-403

자기공명분광 검사 시 프로토콜 이해 = Understanding protocols in magnetic resonance spectroscopy : focusing on literature studies : 문헌연구 중심으로 백민규, 류영환, 구은회 p. 405-409

(A) research on the nuclear deterrence strategy of South Korea through dispute of India and Pakistan Dong-Kwon Cho, Young-Hwan Ryu, Sin-Young Yu p. 411-416

유전자 발현을 활용한 루테튬 (177Lu)의 암 치료 효능 검증 = Verification of the cancer therapeutic efficacy of lutetium-177 using gene expression 김다미, 이소영, 임재청, 최강혁 p. 417-425

중수로 원전 주변 환경 및 인체 삼중수소 방사능 모니터링에 관한 고찰 = A study on the environment and human tritium radiation monitoring around the heavy water nuclear power plant 한상준, 이홍연, 김보길, 하혜경, 신용주 p. 427-436

대한민국의 데이터를 활용한 국내·외 평가 방법론에 따른 축산물 취식 시 삼중수소 유효선량 평가 비교·분석 = Comparative analysis of effective dose evaluation for tritium in animal product ingestion according to domestic and international evaluation methodologies using data from the Republic of Korea 박제완, 김용민 p. 437-442

Shielding evaluation and activation analysis of facilities by neutron generator for the development of 20 feet container inspection system Jin-Woo Lee, Dae-Sung Choi, Gyo-Seong Jeong p. 443-449

Research on the suitability of nuclear sharing strategy of South Korea through the nuclear strategy of U.S. NPR Dong-Kwon Cho, Sin-Young Yu, Sung-Gil Kim p. 451-456

RESRAD-RECYCLE 전산코드를 활용한 금속폐기물 내 우라늄 자체처분 허용농도 예비 평가 = Preliminary evaluation of clearance level of uranium in metal waste using the RESRAD-RECYCLE code 이선우, 홍정환, 박정석, 김광표 p. 457-469

비정형 공정부산물 In-Situ 감마선 측정 정확도 향상을 위한 효율교정 모델 최적화 방법 개발 = Development of an efficiency calibration model optimization method for improving in-situ gamma-ray measurement for non-standard NORM residues 최우철, 전태훈, 송정호, 김광표 p. 471-479

한반도 원자력 활동 현장 검증을 위한 인력 및 장비 운반에 관한 연구 = Research on transportation of personnel and equipment for verification of nuclear activities on the Korean Peninsula 한지영, 박수희, 박제완, 김용민 p. 481-487

Isoegomaketone ameliorates atopic dermatitis via MAPK and STAT pathway-based pro-inflammatory cytokine regulation ChangHyun Jin, Ye-Ram Kim, JaeYoung Shin, ByoungOk Cho, Ah-Reum Han p. 489-499

경주 중저준위방폐물 처분시설 내 셀룰로오스 함유 방폐물 처분가능 총량도출을 위한 스웨덴 SFR 처분시설 사례 분석 = A case study of SFR disposal facility in Sweden to derive the total disposable amount of radioactive waste containing cellulose in low and intermediate level radioactive waste disposal facility in Gyeongju 하재철, 강명구, 최세호 p. 501-508

극저준위 콘크리트, 금속 해체방폐물의 방사선적 특성을 고려한 매립형 처분시설 방사선작업자 예비 피폭선량 평가 = Preliminary radiation exposure dose evaluation for workers of the landfill disposal facility considering the radiological characteristics of very low level concrete and metal decommissioning wastes 도호석, 조예슬, 강현구, 하재철 p. 509-518

경수로 사용후핵연료 재포장 개념(안) 수립 = Conceptual design for repackaging of PWR spent nuclear fuel 이상환, 신창민, 강현구, 조천형, 정해룡 p. 519-532

수침 문화재 보존 처리에 있어 엑스선 조사의 연속성에 따른 살균력 효과 비교 = Comparison of the effectiveness of disinfection according to the permanence of X-ray irradiation for preservation of water-logged cultural heritages 조경서, 곽영혁, 이면주, 정래동, 박해준 p. 533-542

납 표준물질을 이용한 방사성동위원소 Thallium-201의 화학적 분리공정 개발 = Development of chemical separation process for thallium-201 radioisotope with lead standard material 이준영, 김태현, 박정훈 p. 543-549

방사선량률 예측을 위한 기계학습 기반 모델 개발 및 최적화 연구 = Machine learning based model development and optimization for predicting radiation 이시현, 이홍연, 염정민 p. 551-557

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